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Proper Combustion
monoxide reading should not exceed 100 ppm.
Unit
CO
7.6 - 8.6
Table 26. High Fire
Unit
CO
070
090
110
5.3 - 6.3
135
Table 27. Low Fire
Manifold Pressure Nat Gas
Firing
Rate
Min
40%
0.5
70%
1.7
100%
3.2
NOTE
installation instructions for the conversion procedure.
Table 28. Manifold and Operating Signal Pressures in inches 0-7500 ft (0-2286 m)
LP/Propane
Kit
Unit
0 - 10,000
(0 - 3048 m)
070
090
68W77
110
135
NOTE The values given are measurements only. The gas valve should not be adjusted.
Table 29. Conversion Kit Requirements and Manifold Test Pressures
31-5000723 Rev. 1
The maximum carbon
% for Nat
CO
% for L.P.
2
2
9.1 - 10.1
% for Nat
CO
% for L.P.
2
2
5.7
7.2 - 8.2
6.8 - 7.8
Normal
Max
0.6
0.7
1.9
2.1
3.5
3.8
High Altitude Pressure
Switch Kit
0 - 7,500
7,501 - 10,000
(0 - 2286 m)
(2287 - 3048 m)
14T65
High Altitude
NOTE:
Manifold Pressure LP/Propane
Min
Normal
Max
1.3
1.6
1.9
5.1
5.5
5.9
9.5
10.0
10.5
Manifold Pressure at All Altitudes (in. w.g.)
Low Fire
(35% rate)
Natural
LP/
Gas
Propane
0.40 - 0.60
1.2 - 1.8
Operating Pressure Signal (Delta P)
Min
Normal
0.25
0.30
0.60
0.65
1.10
1.15
High Fire
(100% rate)
Natural
LP/Propane
Nat
Gas
3.2 - 3.8
9.5 - 10.5
.0625
Max
0.35
0.70
1.20
Size
LP
.034
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